CN206115124U

CN206115124U - Dustproof filtration and have its projection arrangement

Info

Publication number: CN206115124U
Application number: CN201621037411.9U
Authority: CN
Inventors: 杜伦春; 黄旻; 农静杰; 谢涛; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd; Shenzhen Appotronics Technology Co Ltd
Priority date: 2016-09-05
Filing date: 2016-09-05
Publication date: 2017-04-19
Anticipated expiration: 2026-09-05
Also published as: WO2018040635A1

Abstract

The utility model provides a dustproof filtration, it includes support and filtering component, the support is located one side of filtering component. The support includes solid portion and hollow part, through filtering component's air quilt solid portion block and can via hollow part is passed through the support. The utility model discloses a dustproof filtration is through setting up hollow part and solid portion on the support to adjust hollow part and solid portion's distribution situation, the region that makes hollow part place is roughly just to projection arrangement's the region that generates heat, and the region that makes the solid portion place is roughly just to projection arrangement's the non - region that generates heat, thus make the outside air follow with the air inlet is concentrated to projection arrangement's the regional corresponding hollow part of generating heat, has improved radiating efficiency and amount of wind utilization ratio.

Description

Dustproof filter structure and the projection arrangement with it

Technical field

This utility model is related to air radiating filtration art, more particularly to a kind of dustproof filter structure and dust-proof using this The projection arrangement of filtration.

Background technology

With the development of science and technology, application of the projection arrangement (such as projector) in live and work is more and more extensive.Projection Device is a kind of powerful device for converting electrical energy into luminous energy, and its composition structure includes multiple generation in the course of the work greatly The thermal source of calorimetric amount, such as light source, colour wheel, photomodulator etc..In existing projection arrangement, typically thermal source is entered by forced convertion Row radiating.When forced convertion is carried out, the microparticle such as dust, impurity in projection arrangement surrounding is entered together with air Projection arrangement, and accumulated inside projection arrangement, affect the heat dispersion of projection arrangement；Especially seriously, projection dress Put the performance of the optical component of inside is affected very big by the dust particale in air, if micronic dust enters light path part, meeting is straight Connecing causes the decline even components and parts of picture quality to damage, and requires that projection arrangement has good anti-dust performance for this.

A kind of existing projection arrangement, its dustproof filter structure setting is on its shell.The dustproof filter structure includes Filter assemblies and the upper and lower casing that is integrated of assembling, wherein the filter assemblies are placed in upper and lower casing, and it is described under Housing is connected with the shell of projection arrangement.The through hole being interconnected is offered in upper and lower casing and filter assemblies.So And, the through hole being opened on lower house typically covers the whole surface region of lower house.Therefore, projection dress is flowed into by outside Air in putting, in addition to flowing into region corresponding with thermal source in projection arrangement, can also flow into inside projection arrangement away from heat The region in source, thus, reduces the utilization rate of wind energy, and reduces radiating efficiency.

Utility model content

In view of above-mentioned condition, it is necessary to provide a kind of dustproof filter structure of raising air quantity utilization rate and using described dust-proof The projection arrangement of filtration.

A kind of dustproof filter structure, it includes support and filter assemblies, and the support is located at the one of the filter assemblies Side.The support includes solid section and hollow parts, is hindered by the solid section by the air of the filter assemblies Keep off and the support can be passed through via the hollow parts.

As a kind of preferred version, the central longitudinal axis of the solid section support relative with the hollow parts or in Heart short axle is symmetrical arranged.

As a kind of preferred version, multiple reticulated, opens, the plurality of reticulated, open selectivity are provided with the support Be set to multiple through holes and multiple blind holes, be provided with the through hole region be the hollow parts, be provided with the blind hole Region be the solid section.

Used as a kind of preferred version, the side wall of at least part of through hole is inclined-plane.

Used as a kind of preferred version, the dustproof filter structure also includes fixed mount, is provided with the fixed mount multiple Grid, the filter assemblies are located between the fixed mount and the support；Lock, the fixation are provided with the support Snap fit is provided with frame, the snap fit is through the filter assemblies and is sticked in the lock.

As a kind of preferred version, the bit-avoiding slot passed through for the snap fit is offered on the filter assemblies.

As a kind of preferred version, flanging is provided with the side wall of the fixed mount, the flanging prolongs towards the support Stretch to be formed, and positioned at the filter assemblies and the same side of the support, the flanging is used to connect outer member.

A kind of projection arrangement, it includes shell and any of the above-described kind of dustproof filter structure, the support and the shell It is fixedly connected.

As a kind of preferred version, clamping projection, the side wall of the shell are provided with least side wall of the support On be provided with the buckling groove being engaged with the clamping projection, the clamping projection is connected in the buckling groove.

Used as a kind of preferred version, the shell includes upper shell and the lower house being oppositely arranged, and connects on described Three side walls of housing and lower house, the same one end for the side wall that the upper shell, lower house and two are oppositely arranged is enclosed jointly Into an installing port, the support and filter assemblies are sequentially arranged at the installing port, and filter assemblies capping is described Installing port.

Dustproof filter structure of the present utility model, by arranging hollow parts and solid section on support, and adjusts sky Distribution situation of the center portion point with solid section, makes the region that hollow parts are located substantially just to the heating region of projection arrangement, and The region that solid section is located is made substantially just to the non-heating region of projection arrangement, so that outside air projects dress from described The corresponding hollow parts of the heating region put concentrate air intake, improve radiating efficiency and air quantity utilization rate.

Description of the drawings

Fig. 1 is the partial exploded view of the projection arrangement of the embodiment of this utility model one.

Fig. 2 is the light channel structure figure of projection arrangement shown in Fig. 1.

Fig. 3 is the axonometric chart of the dustproof filter structure of the embodiment of this utility model one.

Fig. 4 is the exploded view of dustproof filter structure shown in Fig. 3.

Fig. 5 is the sectional view of the support of the embodiment of this utility model one.

Main element symbol description

Projection arrangement	100
		Body	20
Shell	22
		Upper shell	221
Lower house	223
		Side wall	225
Installing port	226
		Light source	24
Colour wheel	25
		Light relay system	26
Photomodulator	27
		Projecting lens unit	28
Dustproof filter structure	40
		Support	42
Surface	421
		Through hole	422
Side	423
		Solid section	424
Clamping is raised	425
		Hollow parts	426
Lock	427
		Blind hole	428
Filter assemblies	44
		Bit-avoiding slot	442
Fixed mount	46
		Flanging	462
Snap fit	464
		Grid	466

Following specific embodiment will further illustrate this utility model with reference to above-mentioned accompanying drawing.

Specific embodiment

It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with the accompanying drawings to this The specific embodiment of utility model is described in detail.

Many details are elaborated in the following description in order to fully understand this utility model, but this practicality is new Type can also be different from alternate manner described here to implement using other, and those skilled in the art can be without prejudice to this reality With doing similar application in the case of new intension, therefore this utility model is not limited by following public specific embodiment.

Secondly, this utility model is described in detail with reference to schematic diagram, when this utility model embodiment is described in detail, for ease of Illustrate, representing the profile of device architecture can disobey general ratio and make partial enlargement, and the schematic diagram is example, its This should not limit the scope of this utility model protection.Additionally, the three-dimensional space of length, width and depth should be included in actual fabrication Between size.

It should be noted that when a component is considered as " connection " another component, it can be directly to separately One component may be simultaneously present component placed in the middle.When a component is considered as " being arranged at " another component, it can be with It is to be set directly on another component or may be simultaneously present component placed in the middle.Term as used herein " inside ", " from right To left ", " major axis ", " short axle ", " lower section " and similar statement for illustrative purposes only.Term as used herein " and/or " including the arbitrary and all of combination of one or more related Listed Items.

It is described in detail below by embodiment.

Fig. 1 is referred to, Fig. 1 is the partial exploded view of the projection arrangement of the embodiment of this utility model one.The projection dress Putting 100 includes body 20 and the dustproof filter structure 40 being arranged on the body 20.

Fig. 2 is seen also, Fig. 2 is the light channel structure figure of the body of projection arrangement.The body 20 includes shell 22, if Light source 24, colour wheel 25, light relay system 26 and the photomodulator 27 being placed in the shell 22, and it is arranged at the shell 22 Projecting lens unit 28 that is upper and being partly exposed to outside the shell 22.

The shell 22 includes the upper shell 221 being oppositely arranged and lower house 223, and connection upper shell 221 and lower casing Three side walls 225 of body 223.The upper shell 221, the lower house 223 and three side walls 225 collectively constitute a receipts Cavity volume（It is not shown）, for house the light source 24, the colour wheel 25, the light relay system 26, the photomodulator 27 with And part projecting lens unit 28.One end that the upper shell 221 is not connected with the side wall 225, the lower house 223 not with The connected one end of the side wall 225, and one end that two side walls 225 being oppositely arranged are not connected with other side walls 225 surrounds Form installing port 226.The installing port 226 is used to install the dustproof filter structure 40, and is connected with the host cavity, with Outside air is set to flow into the collecting intracavity by the dustproof filter structure 40, with to the heating of the projection arrangement 100 unit Part is radiated.At least one side wall 225 is provided with multiple buckling grooves adjacent to one end of the installing port 226（It is not shown）.Institute State lower house 223 and offer link slot adjacent to one end of the installing port 226（It is not shown）.

The light source 24 is used to send exciting light, such as blue excitation light, and the light source 24 can be blue laser light source（Or Claim blue laser）.In a kind of change embodiment, the light source 24 can also be the light source of other colors, not with indigo plant Color light source is limited, and the such as light source 24 can be Ultra-Violet Laser light source（Or title ultraviolet laser）, so as to send uv excitation light. Further, the light source 24 is preferably semiconductor laser light resource, to the exciting light for providing high brightness.

The colour wheel 25 is arranged in the light path of the exciting light that the light source 24 sends, for receiving sending out for the light source 24 The exciting light for going out and the light for projecting at least two color.The colour wheel 25 can be discoid colour wheel, for sequentially penetrating Go out the light of at least two color（Such as redgreenblue light, champac two color light）.Specifically, can set on the colour wheel 25 Fluorescent material is equipped with, the fluorescent material is excited the Stimulated Light that can produce another kind or two kinds of colors by the exciting light （The Stimulated Light of such as red greenish-yellow color）, so as to the colour wheel can project the light of at least two colors.

In present embodiment, the colour wheel 25 is transmission-type colour wheel, i.e., the light of described light source 24 is from the one of the colour wheel 25 Side is incident, and the opposite side of the colour wheel 25 projects the light of at least two color.Certainly, in a kind of change embodiment In, the colour wheel can also be reflective colour wheel 25.

The light relay system 26 is arranged at the side of the light source 24, and the light for the colour wheel 25 to be projected carries out even Light, collection and shaping（For example so that the projected spot of light beam meets reservation shape）Deng process after provide to the photomodulator 27。

The photomodulator 27 is arranged between the light relay system 26 and the projecting lens unit 28, for foundation Input image data carries out image modulation to produce to the light beam that the photomodulator 27 is incided via the light relay system 26 Raw modulation image light, and the modulation image light is transmitted to the projecting lens unit 28.The photomodulator 27 can With including reflective light modulators or transmission-type photomodulator.Wherein, the light beam from light source 24 incides reflection type optical tune On the front surface of device processed, and the projecting lens unit 28 is reflected transmitted to from the reflective light modulators；Or, from light The light beam in source 24 is incided on the front surface of porjection type photomodulator, and is transmitted to the projection through the porjection type photomodulator Lens unit 28.Reflective light modulators include reflection-type light valve（Digital micro-mirror device, DMD）, the reflection-type light valve includes Multiple and pixel quantity identical microscopic mirrors, by the angle for electrically or mechanically changing each mirror, into reflection-type The light beam of light valve front surface is modulated and reflected.

The projecting lens unit 28 is used to be amplified incident modulation image light, and by the modulation image light Line is to screen（It is not shown）Projected to show predetermined image.

The axonometric chart of Fig. 3 and dustproof filter structure that Fig. 4, Fig. 3 are an embodiment is seen also, Fig. 4 is Fig. 3 institutes Show the exploded view of dustproof filter structure.The dustproof filter structure 40 includes support 42, filter assemblies 44 and fixed mount 46.Institute State support 42, the filter assemblies 44 and the fixed mount 46 to be sequentially arranged on the shell 22 from right-to-left, wherein institute State filter assemblies 44 to be located between the support 42 and the filter assemblies 44.

The support 42 is installed in the same one end for two side walls 225 being oppositely arranged.Specifically in the shown embodiment, institute State support 42 to be installed on the inwall of two side walls 225 being oppositely arranged, and be spaced between the axial direction of the installing port 226 Predeterminable range, so that the filter assemblies 44 and fixed mount 46 can be placed in the shell 22, and makes the fixed mount 46 can cover the installing port 226.It is understood that in other embodiments, the support 42 can be installed in relatively The same one end for the two side walls 225 for arranging, and covers the installing port 226, now the filter assemblies 44 and fixed mount 46 It is hung on outward on the shell 22.The support 42 is in the shape of a substantially rectangular plate, and it includes two surfaces 421 being oppositely arranged and connects Connect four sides 423 on described two surfaces 421.Successively head and the tail connect for four sides 423.Between the support 42 also includes Every the solid section 424 and hollow parts 426 that arrange.In other words, the support 42 is divided into some, wherein one Part is solid section 424, and wherein another part is hollow parts 426, and the solid section 424 and hollow parts 426 can It is spliced to form the support 42.

Fig. 5 is seen also, the solid section 424 of the support 42 is loose structure.Arrange on the solid section 424 There are multiple blind holes 428.The blind hole 428 can only described in insertion support 42 a surface 421, or the two of the blind hole 428 Hold two surfaces 421 of support 42 described in insertion respectively, and the centre of the blind hole 428 to be separated, make the two of the blind hole 428 End can not connect.The solid section 424 is used to block the circulation of air, in other words, by the air of filter assemblies 44 The support 42 can not be passed through via the solid section 424.It is understood that in other embodiments, the reality Center portion point 424 can also be platy structure, such as described solid section 424 is a solid slab.The hollow parts 426 of the support 42 For loose structure.The hollow parts 426 are provided with multiple through holes 422.Two tables of support 42 described in the insertion of the through hole 422 Face 421.The through hole 422 is used to supply air circulation, in other words, can be via described hollow by the air of filter assemblies 44 The through hole 422 of part 424 passes through the support 42.It is understood that the hollow parts 426 can be only open-celled structure, its The quantity of the through hole 422 of upper setting can be one, or it is multiple.

Further, the side wall of the through hole 422 is inclined-plane, distinguished and admirable by the through hole 422 preferably to guide.Can be with Be understood by, in multiple through holes 422, can only partial through holes 422 side wall be inclined-plane.

Two locks 427 are additionally provided with the surface 421 of the support 42.Specifically in the shown embodiment, described two Individual lock 427 is arranged at the top edge on the surface 421.It is understood that the quantity of the lock 427 can for one or Person is more than two.The lock 427 is used to assemble the fixed mount 46.

Further, the central longitudinal axis of the support 42 relative with the hollow parts 426 of the solid section 424 or in Heart short axle is symmetrical arranged.Wherein, the position of the region of the hollow parts 426 substantially just to the projection arrangement 100 send out Thermal region（Such as thermal source or air channel in projection arrangement）, the position of the region of the solid section 424 is substantially just to described The non-heating region of projection arrangement 100（For example away from thermal source or the region in air channel in projection arrangement）.Therefore, in projection arrangement Under the suction of the fan that portion is arranged, outside air is sequentially passed through after the fixed mount 46 and filter assemblies 44, then via The hollow parts 426 of the support 42 flow to the heating region of the projection arrangement 100, with sending out to the projection arrangement 100 Thermal region is concentrated and radiated, and improves air quantity utilization rate and radiating efficiency.Further, since outside air can not pass through support Solid section 424 on 42, therefore, the region corresponding with the solid section 424 will not deposit on the filter assemblies 44 The impurity such as dust；And the central longitudinal axis due to the support 42 relative with the solid section 424 of the hollow parts 426 or in Heart short axle is symmetrical arranged, after the filter assemblies 44 are using a period of time, can be by the relatively described support 42 of filter assemblies 44 Positive and negative is exchanged or the filter assemblies 44 is rotated into 180 °, so as to not deposit the impurity such as dust on the filter assemblies 44 Region it is corresponding with the hollow parts 426, projection arrangement 100 is removed so as to the filter assemblies 44 can be continuing with Dirt, takes full advantage of filter assemblies 44, extends the service life of filter assemblies 44.It is understood that on the support 42 The distribution situation of hollow parts 426 and solid section 424 be not limited to above-mentioned embodiment, it can be carried out according to being actually needed Arrange.

It is understood that when the hollow parts 426 and solid section 424 are loose structure, in other words, It is provided with multiple reticulated, opens on the support 42, the plurality of perforate is selectively set to multiple through holes 422 and multiple blind Hole 428, the region for being provided with the through hole 422 is the hollow parts 426, and the region for being provided with the blind hole 428 is described Solid section 424, is arranged, i.e., by hollow parts 426 by the difference of the position to the through hole 422 in perforate and blind hole 428 And the different settings of the position of solid section 424, the support 42 can be caused to be applied to the field of various heating sources diverse location Close.

Further, multiple clamping projections 425 are provided with the side 423 of the support 42.The clamping raised 425 and institute State buckling groove to be engaged, so that the support 42 is fixedly connected on the shell 22.Preferably, multiple clampings are raised 425 points Be not symmetrically disposed on be oppositely arranged two sides 423 of the support 42, now, the shell 22 be oppositely arranged two The buckling groove being engaged with the clamping projection 425 is respectively arranged with the inwall of individual side wall 225.It is understood that at it In his embodiment, multiple clamping projections 425 are also dispersibled and are arranged on three or four sides 423, now, with the clamping Raised 425 buckling grooves being engaged be arranged at the shell 22 two side walls 225 being oppositely arranged and/or upper shell 221, And/or on lower house 223.

It is understood that in other embodiments, the clamping raised 425 and buckling groove can be omitted, now The support 42 can for example be welded using other attachment structures or mode, and support 42 is fixedly connected with shell 22.

Referring to Fig. 4, the filter assemblies 44 are located at side of the support 42 away from the shell 22.The mistake Filter component 44 is used to filter the dust particale in outside air, it is to avoid dust particale is entered inside the projection arrangement 100.This reality In applying mode, the filter assemblies 44 are drainage screen, and the drainage screen can be made up of sponge or nonwoven cloth material.The filtration group One side of part 44 is recessed to be formed with two bit-avoiding slots 442.The position of the bit-avoiding slot 442 with it is described lock 427 position phase Correspondence.It is understood that in other embodiments, the filter assemblies 44 can also be dust-proof guard.

The substantially rectangular frame-shaped of the fixed mount 46, it is arranged at the filter assemblies 44 away from the one of the support 42 Side, and cover the installing port 226.The filter assemblies 44 are clamped between the support 42 and the fixed mount 46.It is described A flanging 462 is formed with the base of fixed mount 46.In present embodiment, the flanging 462 extends shape towards the support 42 Into, and positioned at the filter assemblies 44 and the lower section of the support 42.The flanging 462 is used to connect outer member, makes institute State dustproof filter structure 40 to be installed on outer member.In present embodiment, the flanging 462 is inserted as under outer member In the link slot of housing 223, so that the fixed mount 46 is connected on outer member, so that the dustproof filter structure 40 is whole Body is installed on the shell 22 as outer member, and by the flanging 426 and the cooperation of the link slot, can be made described solid Determine frame 46 realize with the shell 22 it is detachably connectable.Two snap fits 464, described two cards are additionally provided with the fixed mount 46 The position of hook 464 is corresponding with the position of described two locks 427, and is fastened on respectively on corresponding lock 427, will be described Fixed mount 46 is fastenedly connected with the support 42.In present embodiment, the snap fit 464 has and ball with lock 427 Pen ejects the similar structure of retraction structure；When the fixed mount 46 is advanced so that snap fit 464 is inserted in the support 42 After in lock 427,427 elastic lockings of snap fit 464 and lock；After locking, when the top both sides for pressing inward against the fixed mount 46, Snap fit 464 departs from lock 427.Thus, the fixed mount 46 is detachably connected with the support 42.On the fixed mount 46 Multiple grids 466 are further opened with, for flowing in the dustproof filter structure 40 for external air flow, and the plurality of grid 466 Primary filter can be carried out by air to external world.

During assembling, support 42 is fixedly connected with shell 22 first；Secondly filter assemblies 44 are placed in into the support 42 Outside；The fixed mount 46 is moved by the outside of the filter assemblies 44 towards the body 20 of the projection arrangement 100 again, Flanging 462 is first inserted in link slot, be further continued for inwardly advancing the fixed mount 46, make the snap fit 464 pass through the filtration The bit-avoiding slot 442 of component 44 is inserted and engaged in corresponding lock 427.

When changing filter assemblies, user inwardly presses lightly on the top both sides of the fixed mount 46, the snap fit 464 with The lock 427 is separated, and the top of the fixed mount 46 is ejected, and it is the replaceable filtration group to take out the fixed mount 46 Part 44.

It is understood that in other embodiments, the flanging 462 may be disposed at the either side of the fixed mount 46 Side, accordingly, the link slot being engaged with the flanging 462 be arranged at the upper shell 221 or lower house 223 of the shell 22 or Side wall 225.

It is understood that in other embodiments, the flanging 462 and link slot can be omitted, as long as described Snap fit 464 on fixed mount 46 is fastened on the lock 427 of the support 42, and makes the filter assemblies 44 be clamped in fixed mount Between 46 and support 42.

It is understood that in other embodiments, the lock 427 may be disposed at any position of the support 42 Put, accordingly, position that the snap fit 464 is arranged on the fixed mount 46 and the bit-avoiding slot 442 are in the filtration group The position arranged on part 44 changes in company with the change of 427 positions of the lock, as long as the snap fit 464 can keep away position through described Groove 442 simultaneously inserts the lock and 427 is engaged, and the fixed mount 46 and filter assemblies 44 are detachably secured to into institute State on support 42.

It is understood that in other embodiments, the bit-avoiding slot 442 can be omitted, as long as the energy of the snap fit 464 Reach through the filter assemblies 44 and be fastened on the lock 427, and the filter assemblies 44 are fixedly clamped in described solid Determine between frame 46 and the support 42.

It is understood that in other embodiments, the fixed mount 46 can be omitted, as long as the filter assemblies 44 Relatively described support 42 is fixed, and for example, the filter assemblies 44 are fixedly connected on the support 42, now by screw The support 42 and filter assemblies 44 are sequentially arranged at the installing port 226 of projection arrangement 100, and the envelope of the filter assemblies 44 The installing port 226 is covered, and the dustproof filter structure 40 with this kind of structure can be applicable in the inner space of device, in dress The air-flow for putting internal circulation is filtered.

It is understood that dustproof filter structure 40 of the present utility model may be used also in addition to applying on projection arrangement 100 Applying need to arbitrarily carry out the device of air radiating at other, and the dustproof filter structure 40 is used for needing to carry out air radiating The cold air of suction is filtered in device, to avoid air in impurity enter device inside.

Dustproof filter structure 40 of the present utility model, by arranging hollow parts 426 and solid section on support 42 424, and make the region that the hollow parts 426 are located substantially just to the heating region of the projection arrangement 100, make described solid The region that part 424 is located substantially just to the non-heating region of the projection arrangement so that outside air from the projection The hollow parts 426 that the heating region of device 100 is corresponding concentrate air intake, improve radiating efficiency and air quantity utilization rate.Separately Outward, according to the hollow parts 426 on support 42 and the distribution situation of solid section 424, make corresponding with the solid section 424 Filter assemblies 44 be located region carried out positive and negative exchange or carry out 180 ° rotation after, can be with the hollow parts 426 position is corresponding, and then continues to carry out dedusting to projection arrangement 100 such that it is able to makes full use of filter assemblies, extended The service life of filter component.Furthermore, by the way that the support 42 is fixedly connected on the shell 22, and by the fixed mount 46 On snap fit 464 be fastened on the lock 427 of the support 42 through the filter assemblies 44 so that the fixed mount 46 with And the filter assemblies 44 are removably attachable on the support 42, so as to when fixed mount 46 is dismantled, the support 42 is not Can together be extracted, be facilitated user dismounting and change filter assemblies 44.

Embodiment of above is only unrestricted to illustrate the technical solution of the utility model, although preferably real with reference to more than Apply mode to be described in detail this utility model, it will be understood by those within the art that, can be new to this practicality The technical scheme of type is modified or equivalent should not all depart from the spirit and scope of technical solutions of the utility model.

Claims

1. a kind of dustproof filter structure, it includes support and filter assemblies, and the support is located at the side of the filter assemblies, It is characterized in that：The support includes solid section and hollow parts, by the air of the filter assemblies by described solid Part stops and can pass through the support via the hollow parts.

2. dustproof filter structure as claimed in claim 1, it is characterised in that：The solid section is relative with the hollow parts The central longitudinal axis or central minor axis of the support are symmetrical arranged.

3. dustproof filter structure as claimed in claim 1, it is characterised in that：Multiple reticulated, opens, institute are provided with the support State multiple reticulated, opens and be selectively set to multiple through holes and multiple blind holes, the region for being provided with the through hole is the sky Center portion point, the region for being provided with the blind hole is the solid section.

4. dustproof filter structure as claimed in claim 3, it is characterised in that：At least partly the side wall of through hole is inclined-plane.

5. dustproof filter structure as claimed in claim 1, it is characterised in that：The dustproof filter structure also includes fixed mount, Multiple grids are provided with the fixed mount, the filter assemblies are located between the fixed mount and the support；Described Lock is provided with frame, snap fit is provided with the fixed mount, the snap fit is through the filter assemblies and is sticked in the lock In button.

6. dustproof filter structure as claimed in claim 5, it is characterised in that：Offer on the filter assemblies for the snap fit The bit-avoiding slot for passing through.

7. dustproof filter structure as claimed in claim 5, it is characterised in that：Flanging is provided with the side wall of the fixed mount, The flanging extends to be formed towards the support, and positioned at the filter assemblies and the same side of the support, the flanging For connecting outer member.

8. a kind of projection arrangement, it includes shell and the dustproof filter structure as any one of claim 1-7, described Support is fixedly connected with the shell.

9. projection arrangement as claimed in claim 8, it is characterised in that：It is convex clamping to be provided with least side wall of the support Rise, the buckling groove being engaged with the clamping projection is provided with the side wall of the shell, the clamping projection is connected in described In buckling groove.

10. projection arrangement as claimed in claim 8, it is characterised in that：The shell includes the upper shell being oppositely arranged with Housing, and connect three side walls of the upper shell and lower house, what the upper shell, lower house and two were oppositely arranged Same one end of side wall surrounds an installing port jointly, and the support and filter assemblies are sequentially arranged at the installing port, and institute State filter assemblies and cover the installing port.